Since I am using XFS for my /myth partition I decided to check fragmentation which showed greater than 99% fragmentation. I can't say that I was all that surprised, this install is getting fairly old and has seen very heavy usage.

I went ahead and let the defrag run for about 7 hours (overnight). Fragmentation when I checked the next morning was at <1% and I've not had a lock-up since (knock-on wood, cross fingers, rub lucky rabbits foot, etc...)

I'm not going to even try to speculate on how defragmenting my /myth partition could have possible cured my lock-ups but I've gone from 2+ lock-ups a day to five days lock-up free.

I guess the take home here is that if you're using XFS on your /myth partition and having issues go ahead and try a defrag and see what happens!

Since I am using XFS for my /myth partition I decided to check fragmentation which showed greater than 99% fragmentation. I can't say that I was all that surprised, this install is getting fairly old and has seen very heavy usage.

Thanks for taking the time to research this and write it up Graysky.

Glad folks are getting some mileage out of this thread and equally glad your system is stable again. Just out of curiosity, what does your /etc/fstab's entry for your /myth look like? Are you using the allocsize=512 switch? It has done wonders for my system (see my post just above your post).

Yes I did use the allocsize=512 switch. It's only been about 5 days but I'll keep an eye on the fragmentation level and see how quickly (or not) it grows.

I think you'll be very pleased with results. The cool thing is that when R6 goes final, we can all just use ext4 which is rumored to rock with large and small files so no need for XFS I like it, but I don't like that fsck can't check/repair it. It's a small pain to manually run it. That said, it is an order of magnitude faster than ext3 when dealing w/ large files

I think you'll be very pleased with results. The cool thing is that when R6 goes final, we can all just use ext4 which is rumored to rock with large and small files so no need for XFS I like it, but I don't like that fsck can't check/repair it. It's a small pain to manually run it. That said, it is an order of magnitude faster than ext3 when dealing w/ large files

Benchmarks I've seen suggest that XFS is faster for large files still. But I am using it as the primary FS on my notebook and blimey it is fast. Boot in under 30 seconds on a 2.5 year old mid range T60.

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